danbelucio
31.10.2019 •
Mathematics
If mary read 2/5 of a page every minute, how long would she take to read 240 pages
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Ответ:
240
÷0.40
600
So, 600 is the answer.
Ответ:
240 is to x minute
convert to fraction
(2/5)/1=240/x
multiply both sides by x
(2/5x)/1=240
2x/5=240
multipy both sides by 5 to get rid of fraction
2x=1200
divide by 2
x=600
600 minutes or 10 hours
Ответ:
a(n) = -20 + 3(n - 1)
Step-by-step explanation:
a(n) = -20 + 3(n - 1)